Method of making couplings



E. E.,JOHNSONI METHOD OF MAKING COUPLINGS.

2 SHEETS,SHEET APPLICATION FILED DEC. I, 1916. I

Patented Mar. 1,

Pigl IF' Imferd'or:

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' Edward EJ'Q E. E.JOHNSON.

METHOD OF MAKING COUPLINGS,

APPLICATION- FILED 050.1. 1916.

1,369.97&

Patented Mar. 1, 1921.

2 SHEETSSHEET 2- I fig 33 P g- \I fa Fig.5,

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EDWARD n a'omrsoiv, or sun. PAUL, MINNESOTA.

METHOD or MAKING courmims.

Application filed December 1, 1916. Serial 110. 134,475.

To all whom it may concern.

Be it known .that I, EDWARD E. JOHNSON, a citizen of the United States,residing at St. Paul, in the county of Ramsey and State of Minnesota,have invented certain new and useful Improvementsin Methods of MakingCouplings, of which the following is a specification. L

My invention relates to methods of making couplings, and has for itsobject to provide a coupling for wooden pump rods formed of sheet metaland having a sheet metal part for claspingv and being secured to thewooden rod or shaft and a cylindrical portion (threaded eitherexternally or" internally) integrally united t the clasping portion. I

The method I of my invention comprises operating upon a single stripor'strips of sheet metal to form the same by die pressing, punching orotherwise into a shaft-clasping portion. and a cylindricalthread-carrying portion, thereafter uniting the edges of thethread-carrying portion by welding or other suitable'means into anintegral cylindrical member and threading the same internally orexternally, as may be desired. I

'The article resulting from this method 'comprises a sheet metal memberhaving wings or clasping portions adapted to re-- .ceive the end of awooden pump rod and be riveted thereto, and having a cylindrical ortubular portion integrally, united with said clasping portions andthroughout the circumference of the cylindrical portion which isexternally or internally threaded, a pair "of such members having thecylindrical portions complementally formed, one being externallythreaded and the other 1n- "ternally threaded, comprlsing a completecoupling device.

. The full objects and advantages of my in 'vention will appearinconnection with the detailed description thereof and are particularlypointed out in the claims.

In the drawings, illustrating the application of my invention- Figure 1is a view of a blank of sheet metal cut and ready for formation.- Fig. 2shows the resulting coupling member made by stamping and shaping theblank of Fig. 1 and integrally uniting by welding or otherwise thecylindrical portion thereof. Figs.

. 3 aud t are similar views showing another form of. blank and resultingcoupling mem-- ber. Figs. 5and 6 illustrate a blank and a member formedtherefrom which will com- #26 in Fig. 14.

prise a half of one of said coupling members when united therewith.Figs. 7 8 and 9 illustrate the manner of making the clasping portion outof one piece of metal and the threaded portion out of another andunitirig the same to form the complete article. ig. 10 is'a side viewand Fig. 11 an end view of the coupling member shown in Fig. 2. 12illustrates a section of a coupling w ich is formed by putting toget ertwo of the members shdwn in Fig. 6.

Fig. 13 shows the mannerof using'the coupling for connecting a woodenrod and an 1ron rod. Fig. 14 shows the manner of using the coupling forconnecting two wooden rods.

In the practice of my invention as shown in Figs. 1 and 2, .a blank 15is first cut from sheet metal with a slit 16 therein providing twoseparated pieces 17 and Band a connected portion 19. Bystamping,pressingor otherwise the ortion 19 is formed into a cylindrical mem er20- and the portions 17 and 18 into parallel clasping members 21 and 22,having inwardly-turned edges 23 for clasping a rectangular wooden rod.The,

metal along the opening 24 comprising the meeting edges of the ortion 19isthen integrally united, pre erably by welding, forming a perfectclosed cylinder to which the clasping members 21' and 22 are inlargerelative to the externally-threaded por-' tion 26 of another couplingmember so that these two members will constitute a complemental pair orcouple, the externally-threaded member being adapted to screw into theinternally-threaded member as shown in Fig.

14. Also, as shown in Fig. 13, an iron rod 30 may be screwed into aninternally-threaded cylindrical portion 20 for connection of an iron rodwith a wooden rod, which is fre-.

quently of great advantage where wooden rods-have been-in use and it isdesirable to connect to an iron rod,

. A construction in all respects similar to that of Figs. 2, 10 and 11may be made by stamping from separate blanks 3L complemental claspingportions 32 corresponding to the clasping portions 21 and 22 of cylinderportion 20 illustrated in Figs. 2, and

'11 and corresponding halves 33 of the tubular portions, and thereafterbringing the half cylinders 33 .into juxtapositlonand welding them alongthe edge lines. thereof.

The resulting article will beoperatively the.

same as that of Fig. 2.

qAs shown in Figs. 3 and 4:, an effective construction may be made froma strip of metal 34 by cutting away aiportion' as indicated at 35,leaving two separated ears 36 and 37 and a larger contiguous portion 38The portion 38 may, by die-stamping or otherwise, be formed into athree-sided rectangle, indicated at 39, and'integrally connected with atubular portion 40 which is formed of the two ears 36 and 87 which havetheir edges brought together as indicated in dotted lines at 41 and madeintegral by Welding. This is a very strong construction in which theside clasping mem-' bers 42 and 43 are integrally connected along oneedge of each and, of course, are inte grally connected with thecylindrical portion 40, which will be internally or externally threadedas desired to form acomplemental pair or couple for connecting theadajcent ends of wooden rods.

As illustrated in Figs. 7 8 and 9 a strip of metal 44 may be formed intoa U-piece of which the sides 46 and 47 comprise clasping members. Acylinder may be formed of another strip of metal having the meetingedges thereof welded together, and this cylinder is welded to thebase'of the U member as indicated in Fig. 8 and is thereafter internallyor externally threaded as desired to form complemental pairs forconnecting adjacent ends of wooden rods.

The advantages of my invention have i been fairly well pointed "out inconnection with the description thereof. Primarily the practice of thisinvention makes it practicable to provide particularly strong andeffective coupling members for wooden pump rods and similar deviceswhich are light and cheap to make because formed of sheet metal insteadof castings, as has been done in the past; and which for the same reasonform a tubular member, welding said edges {)ogether, and threading saidtubular memer. M

2. The method of making couplings .for pump rods which consists incutting ablank from sheet metal, forming a portion of the blank into apair of longitudinally extending wings spaced from each other, bendinganother portion of the. blank to form a tubular member havinglongitudinally meet-' ing edges, welding said edges together andthreading said tubular member.

3. The method of making couplings for pump rods which consists incutting a blank from sheet metal, cutting the blank longiportion of theblank into 'Ia pair' of flat longitudinally extending wings spaced from.each other,.bending another portion of the blank to form atubularmember having longitudinally meeting edges, welding said edges together,and threading said tubular member.

- 4. The method of making couplings for pump rods which consists incutting a blank from sheet metal, cutting the blank longitudinally for apart ofjits length, forming the longitudinally cut blank portion into atudinally for part of its length, forminga pair of flat longitudinallyextending wings spaced from each other, bending the other blank portionto form a tubular member having longitudinally meeting edges, weldingsaid edges together and threading said tubular member.

si ature. New.

In testimony whereof I aflix m EDWARD E. Jo-

